Combine the chia seeds, milk, vanilla extract/ powder and sweetener together. Mix thoroughly to avoid the seeds clumping (as this can cause them to sink in the liquid). *
Leave the chia pudding covered in the fridge for 2 hours or overnight, to thicken. This is also the time to pop your banana and raspberries in the freezer.
When you're ready to serve, then you can prepare the raspberry smoothie. Do this by blending all the smoothie ingredients, till smooth. Using frozen bananas and raspberries will yield a thick, creamy smoothie. If you want something lighter, then you can use room-temp banana instead.
Layer the raspberry smoothie ** over the chia pudding and add toppings. You could use fresh or frozen fruit as well as sprinkles (coconut flakes, etc.). You could also add some homemade peanut butter or almond butter for a PBJ style dish. Alternatively, you could also add some cacao nibs or dark chocolate chips.
Notes
* To make double sure that they don't clump, you can leave the chia pudding a couple of minutes after first mixing. Then stir again and leave to set. ** For a fun smoothie variation, you could also add some rose water. Alternatively, some additional detox ingredients like avocado or beetroot. Note* When meal prepping, I like to make a weeks worth of chia pudding in a large bowl. However, you can also prepare the individual portions of chia pudding directly into the mason jars.